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08/14/24 at 20:46:49
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RCA 57-22 vacuum tube? (Read 1126 times)
SonicSeeker
Seasoned Member
Listening to the
music not the
equipment
Posts: 427
RCA 57-22 vacuum tube?
09/30/23 at 13:56:09
I have a coke bottle shaped 57-22 by RCA and can't remember what this is?
It has been in my drawer of tubes for 30 plus years so I don't recall.
Anyone know what this is equivalent too?
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Gilf
Seasoned Member
Posts: 171
Re: RCA 57-22 vacuum tube?
Reply #1 -
09/30/23 at 14:48:32
Hi Sonicseeker. I recall that it may be a voltage regulation tube, similar to an OB2. I could be wrong. My old mind doesn’t work like it used to. I have a couple from an old reel to reel and I think that’s what they were.
How do you like your Manley Chinook? I used a number of Manley products in my recording studio days. They were very nice. I’ve never heard their hifi products.
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SonicSeeker
Seasoned Member
Listening to the
music not the
equipment
Posts: 427
Re: RCA 57-22 vacuum tube?
Reply #2 -
09/30/23 at 15:01:16
5R4G-Y I think
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thumbnail_IMG_1263.jpg
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CAJames
Seasoned Member
"I've run every
red light on memory
lane."
Posts: 2020
Re: RCA 57-22 vacuum tube?
Reply #3 -
09/30/23 at 15:37:17
Quote:
Posted by: SonicSeeker Posted on: Today at 07:01:16
5R4G-Y I think
That certainly looks like a 5R4. I've been browsing a number of RCA tube manuals and can't find any reference to a type 57-22. That kinda sounds like a date code to me: 22nd week of 1957.
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[FOOBAR2000 | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Maple-tree Phono 3E
STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Audeze LCD-XC
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Tubecan
Senior Member
Posts: 86
Re: RCA 57-22 vacuum tube?
Reply #4 -
09/30/23 at 19:42:39
Yup RCA 5R4GY..I have a 58-35….1958,35th week.
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